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  1. JC-SuperJet

    Calculating Flywheel Magnet Strength

    CALCULATING FLYWHEEL MAGNET STRENGTH This is a Crude Ballpark attempt at calculating the Flywheel Magnet Strength to use as a reference tool to distinguish a Good Flywheel from a Bad Flywheel. Then the Actual Magnet Strength can be measured with a Gauss Meter and compared to the Nominal...
  2. JC-SuperJet

    Ideas for ski testing tank

    There's a used purpose-built Jetski Tank for $750 in Dallas. Comes with a lifting Boom. https://dallas.craigslist.org/sdf/boa/d/mabank-jetski-test-tank-seadoo/7617177463.html Also seen where a Boat Shop had made a small rectangular concrete pool with a boat trailer ramp. Deep (2ft+) enough to...
  3. JC-SuperJet

    Charging system troubleshooting

    Here's another way to check Flywheel Magnets: "You can use a multimeter to measure the resistance between each pair of adjacent poles on the magnet. If there’s a significant difference between measurements, it might suggest that some magnets are weaker than others." So all Flywheel Magnet...
  4. JC-SuperJet

    '95 750SXI Coffman exhaust Carb Settings question...

    Seen where Pam Coffman wrote that the Rocket Pipe was NOT made for the 750 SXi. If there is no Waterbox, you will have a hard time trying to dial in the Carbs. 2 Strokes need some Exhaust Back Pressure. You didn't say if the Keihin Fuel Pump itself was rebuilt... The Jetting and Pop-Off you...
  5. JC-SuperJet

    '95 750SXI Coffman exhaust Carb Settings question...

    Both Cylinder Compression Readings? Engine air-leak tested? Good Spark? Crankcase Drain removed and blocked? 650 or 750 Coffman Exhaust? Coffman Sizzler, Signature or Lightning? Stock OEM Airbox or Aftermarket Flame Arrestors? Original Waterbox, A/M Waterbox or No Waterbox? Keihin Carb Fuel...
  6. JC-SuperJet

    SN Superjet fix and improve build

    Haven't seen Duckbills come off. Had them on a 62 mph 951 SXR race ski and stayed put. But only really work when Ski is in motion. Will drain a little Water when on the Trailer and Stand. So far so good on the Square Nose. But I'm only chasing Buoys. The Versiplugs drain more Water and the Ski...
  7. JC-SuperJet

    SN Superjet fix and improve build

    https://www.atlanticjetsports.com/products/duckbill-drain-system-universal-pwc-jet-boat?_pos=2&_sid=f2e25745f&_ss=r
  8. JC-SuperJet

    SN Superjet fix and improve build

    The Fiberglass Layers (Top and Bottom Hull) around the Aft Eye tend to separate with time. I noticed this on mine before I Turfed, so I applied some Epoxy "Peanut Butter" around the Hole Inner Wall to seal the gaps, let it cure, sanded it smooth. Then turfed. But generally, the Square Nose...
  9. JC-SuperJet

    1996 Yamaha WaveBlaster 2 760 HOOD HATCH plastic

    @Clous22. Apparently you have every Part that everyone needs :D You're amazing! :confused:
  10. JC-SuperJet

    Superjet not starting after melting exhaust hose

    If the Exhaust Hose melted, the Pistons probably melted too... Do a Compression check and report back. You need to figure out why the Engine ran so hot in the first place.
  11. JC-SuperJet

    Dakine Footstraps (Pair)

    Family’s and friends only. :p
  12. JC-SuperJet

    JetManiac MASTER PARTS LIST - New/Used Yamaha and Custom Build Parts

    @Clous22. What Ski do you ride? So you sell Parts too?
  13. JC-SuperJet

    Charging system troubleshooting

    Too bad that a Flywheel needs to be installed and the Engine completely assembled, started and revved to test the Flywheel Magnet and Coil Voltage Output to find a sketchy Flywheel. So if the AC Voltage Output is low, still don't know if the Coil or the Flywheel Magnets are bad or both. Then...
  14. JC-SuperJet

    One less x2

    October Friday the 13th of 1307 AD is the day the Crusaders got rounded up in France...a really bad day. o_O
  15. JC-SuperJet

    One less x2

    Glad you're still among the living ;) How much is 1/2 of an X2? 1?
  16. JC-SuperJet

    Help with Carbon Skis and Galvanic Corrosion. How the heck can i keep it in check?

    Think someone suggested using Heat Shrink Insulation. 2.5 Diameter Heat Shrink is available at Grainger.
  17. JC-SuperJet

    R&d rev pipe

    ?
  18. JC-SuperJet

    62t zeeltronic installation

    The 2 Red Wires supply Power to the Starter Relay and to the Zeeltronic CDI. There is one extra Red Wire required because now, the DC Zeel CDI needs DC Power directly from the Battery whereas the Stock AC CDI got AC Power from the Magneto Generator Charging Coil (Brown/White Wire from Flywheel...
  19. JC-SuperJet

    Hi Comp JS440 w/ Copper Head Gasket, do I need O-Rings?

    The Annealing Temperature varies among Metals, but the Annealing Process is similar. Most Metals harden, just like Copper does but at different stress levels, when deformed or cold-worked. "A similar process can be followed to anneal steel, brass, and aluminum, but the difference lies in their...
  20. JC-SuperJet

    Hi Comp JS440 w/ Copper Head Gasket, do I need O-Rings?

    Won't rapid cooling harden the Copper Gasket? Thought it needed to be slowly air-cooled so that it becomes Ductile (softer) for a better seal? That's what Annealing is supposed to be: heat then slow cooling... If making a knife blade, a rapid quench/cooling would be needed to make the Steel...
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